Applies to all Barracuda Spam Firewalls.
Connection Refused means that the Barracuda is unable to connect to the specified SMTP port on the configured destination server. In the event that the recipient server is down, the Barracuda will continue to spool the mail for 48 hours, retrying every 15 minutes.
If the mail in your Outbound Queue is not reaching its destination and you would like to remove it, simply wait. Mail will remove itself from the Outbound Queue after 48 hours of retrying.
You can change the 48-hour lifespan on the Advanced > Expert Variables page of the Barracuda Spam Firewall's Web interface. Enter in the Outbound Queue Max Message Lifetime (hours) option the number of hours that messages should wait in the outbound queue before expiring. Click Save Changes when you are finished.
Link to This Page: